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#include <bits/stdc++.h>
using namespace std;
string st;
char ktu;
int dem,i,d;
int main()
{
getline(cin,st);
cin>>ktu;
d=st.length();
dem=0;
for (i=0; i<=d-1; i++)
if (st[i]==ktu) dem++;
cout<<dem;
return 0;
}
câu 1 Uses Crt;
Var St:String;
dem: Array[‘A’..’Z’] Of Byte
; i:Byte;
ch:Char;
Begin Write(‘Nhap xau St: ‘);
Readln(St);
{Khởi tạo mảng} For ch:=’A’ To ‘Z’ Do dem[ch]:=0;
{Duyệt xâu} For i:=1 To Length(St) Do If Upcase(St[i]) IN [‘A’..’Z’] Then Inc(dem[Upcase(St[i])]);
{Liệt kê các ký tự ra màn hình} For ch:=’A’ To ‘Z’ Do If dem[ch]>0 Then Writeln(ch,’ : ’,dem[ch]);
Readln;
Program HOC24;
var s: string;
i,d: byte;
begin
write('Nhap xau :'); readln(s);
d:=0;
for i:=1 to length(s) do if s[i]=' ' then d:=d+1;
write('Xau ',s,' co ',d,' ki tu cach');
readln
end.
uses crt;
var s:string;
i,d,dem:integer;
begin
clrscr;
write('Nhap xau:); readln(s);
d:=length(s);
dem:=0;
for i:=1 to d do
if s[i]=#32 then inc(dem);
writeln(dem);
readln;
end.
Bài 2:
#include <bits/stdc++.h>
using namespace std;
string st;
int d;
int main()
{
getline(cin,st);
d=st.length();
cout<<d;
return 0;
}
Bài 1:
Var so,i,n,dem:integer;
Begin
Write('Nhap so luong so n = ');readln(n);
For i:=1 to n do
Begin
Write('Nhap so thu ',i);readln(so);
If so mod 2 = 0 then dem:=dem+1;
End;
Write('Co ',dem,' so chan');
Readln;
End.
Bài 2:
Var st:string;
Begin
Write('Nhap vao xau ki tu ');readln(st);
Write(' Xau vua nhap co do dai la ',length(st));
Readln;
End.
tham khảo
uses crt;
var a:string;
i,d,dem:integer;
begin
clrscr;
write('Nhap xau a:'); readln(a);
dem:=0;
d:=length(a);
for i:=1 to d do
if a[i]=' ' then inc(dem);
writeln(dem);
readln;
end.
uses crt;
var st:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st);
d:=length(st);
writeln('Xau vua nhap la: ',st);
for i:=1 to d do
if st[i] in ['a'..'z'] then upcase(st[i]);
writeln(st);
readln;
end.
tk
uses crt;
var st1:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st1);
d:=length(st1);
for i:=1 to d do
if (st1[i]='a') and (st1[i+1]='b') and (st1[i+2]='c') then delete(st1,i,3);
writeln(st1);
readln;
end.
uses crt;
var st1:string;
i,d:integer;
begin
clrscr;
write('Nhap xau:'); readln(st1);
d:=length(st1);
for i:=1 to d do
if (st1[i]='a') and (st1[i+1]='b') and (st1[i+2]='c') then delete(st1,i,3);
writeln(st1);
readln;
end.
Var st:string;
i,dem:integer;
Begin
Write('Nhap xau ky tu ');readln(st);
For i:=1 to length(st) do
If st[i] = 'a' then dem:=dem+1;
Write('So ky tu a co trong xau la ',dem);
Readln;
End.